Method and apparatus for paging in wireless communication system
A method and an apparatus for paging in a wireless communication system are provided. The method includes determining, by a radio access network (RAN) node, information for paging, where the information for paging includes information for paging a User Equipment (UE) which is related to a synchronization signal block (SSB) beam; and paging, by the RAN node, the UE in an idle state or inactive state, based on the information for paging. The method can page a UE more accurately.
1 . A method performed by a gNode B-distributed unit (gNB-DU) in a wireless communication system, the method comprising:
receiving, from a gNode B-central unit (gNB-CU), a user equipment (UE) context release command message;
generating a UE context release complete message including information related to recommended synchronization signal blocks (SSBs) as assistance information for paging a UE, wherein the information includes identification information of one or more SSB beams that have been accessed by the UE in each of a plurality of cells;
transmitting, to the gNB-CU, the UE context release complete message; and
receiving, from the gNB-CU, a paging message including a paging cell list, wherein the paging cell list includes the information related to the recommended SSBs.
2 . A gNode B-distributed unit (gNB-DU) in a wireless communication system, the gNB-DU comprising:
a transceiver; and
a controller configured to:
receive a user equipment (UE) context release command message from a gNode B-central unit (gNB-CU),
generate a UE context release complete message including information related to recommended synchronization signal blocks (SSBs) as assistance information for paging a UE, wherein the information includes identification information of one or more SSB beams that have been accessed by the UE in each of a plurality of cells;
transmit the UE context release complete message to the gNB-CU; and
receive a paging message from the gNB-CU including a paging cell list, wherein the paging cell list includes the information related to the recommended SSBs.
3 . The method of claim 1 , wherein the paging message is transmitted to the UE based on the information related to the recommended SSBs.
4 . The method of claim 1 , wherein the information related to the recommended SSBs is stored in the gNB-CU.
5 . The gNB-DU of claim 2 , wherein the information related to the recommended SSBs further includes identification information of one or more SSB beams that have been accessed by the UE in each of a plurality of cells.
6 . The gNB-DU of claim 2 , wherein the paging message includes a paging cell list, and
wherein the paging cell list includes the information related to the recommended SSBs.
7 . The gNB-DU of claim 2 , wherein the paging message is transmitted to the UE based on the information related to the recommended SSBs.
8 . The gNB-DU of claim 2 , wherein the information related to the recommended SSBs is stored in the gNB-CU.